With The Dark Knight arriving July 18, and fans eagerly awaiting actor Aaron Eckhart's portrayal of the District Attorney-turned-villain (thankfully, Billy Dee Williams and Tommy Lee Jones's turns will remain laughable relics of the past), IGN Stars takes a look at Batman's most complicated and tragic antagonist.

We raid Arkham's files for as complete a dossier on Mr. Dent as possible. Scrutinize this baddie's M.O. at length and share your diagnosis in the Comments.

Can The Dark Knight out do The Animated Series portrayal? We'll know come July.

An Introduction: On one extreme end of Batman's pantheon of villains stands the Joker, the murderous and anarchistic antithesis to Batman who, at times, has almost pushed the Dark Knight to commit the unspeakable act of murder. On the other extreme stands Harvey Dent/Two-Face, the tortured hero turned criminal mastermind who, with his deeply scarred visage and his own twisted sense of justice, is a walking reminder of Batman's failure to protect one of his closest allies.

Although the Clown Prince of Crime stands alone as the deadliest of Batman's rogues, because of his deep connection to Batman's past, it's Two-Face who may very well be the most tragic.

First Appearance:

Alright, Harv. We get it - you like "twos".

Introduced in the pages of Batman's adventures in the 1940s as a Jekyll and Hyde-inspired criminal, a mastermind obsessed with the number two (oddly enough, he was originally named Harvey Kent), it wasn't until much later on in the 1980s that Two-Face evolved into a much more compelling character. He became a psychologically tormented hero who fell from grace and succumbed to his inner demons and his obsession, not merely with the number two, but the duality of man.

After undergoing a slight resurgence and revamp at the hands of writer Denny O'Neil in the 1970s, it was Frank Miller's seminal Batman: Year One that really brought Harvey Dent into the A-list category he now occupies alongside Batman's other fantastic rogues.

As Gotham City's wunderkind District Attorney, it's Dent who works alongside a young Captain James Gordon and a rookie Batman to clean the city of its rampant corruption at the hands of organized crime.

While nearly succeeding in their war against crime, Gordon and Batman are forced to watch their good friend and ally succumb to the demons inflicted by a childhood of abuse at the hands of his father, and a history of mental illness. His transformation is solidified when, while in court, crime boss Sal Maroni throws acid on Dent's face and thus scarring Harvey with his permanent duality.